CN116744645A - Power device and photovoltaic system - Google Patents

Abstract

The invention discloses a power equipment and a photovoltaic system, wherein the power equipment includes a casing and a plurality of components to be heat dissipated and a heat dissipation device arranged in the casing. The casing has a heat dissipation cavity and a sealed cavity arranged separately. The heat dissipation cavity The cavity has a first air inlet and a first air outlet connected to the outside. A plurality of devices to be heat dissipated are at least partially disposed in the sealed cavity; the heat dissipation device includes a radiator and a heat exchanger, the radiator is disposed in the heat dissipation cavity, and a heat exchange channel is provided in the heat exchanger. The heat exchanger is arranged in the sealed cavity, and the heat exchange channel communicates with the first air inlet and the first air outlet, or the heat exchanger is arranged in the heat dissipation cavity, and the heat exchange channel communicates with The sealed cavity. The technical solution of the present invention can improve the heat dissipation performance of the power equipment, thereby increasing the service life of the power equipment.

Description

Power equipment and photovoltaic systems

Technical field

The present invention relates to the field of heat dissipation technology, and in particular to a power device and a photovoltaic system.

Background technique

As power converters become more powerful, they become more integrated. The losses of power devices, magnetic devices, fuses, switches, capacitors and other devices in the power converter chassis are further increased, and the heat flow density is also increasing. And the temperature rise inside the chassis directly determines the performance of these devices. At present, the power converter chassis mainly relies on natural heat dissipation from the wall of the chassis. However, this heat dissipation method has limited heat dissipation capacity, resulting in the inability to achieve effective cooling inside the chassis, thus affecting the life and reliability of internal components, and thus affecting the overall power converter. service life.

Contents of the invention

The main purpose of the present invention is to provide a power device that aims to improve the heat dissipation performance of the power device and thereby increase the service life of the power device.

In order to achieve the above objectives, the power device proposed by the present invention includes:

The casing has a heat dissipation cavity and a sealed cavity arranged separately, and the heat dissipation cavity has a first air inlet and a first air outlet connected to the outside;

A plurality of components to be heat dissipated are at least partially disposed in the sealed cavity; and

The heat dissipation device includes a radiator and a heat exchanger. The radiator is located in the heat dissipation cavity. A heat exchange channel is provided in the heat exchanger. The heat exchanger is located in the sealed cavity. A thermal channel communicates with the first air inlet and the first air outlet, or the heat exchanger is provided in the heat dissipation cavity, and the heat exchange channel communicates with the sealed cavity.

Optionally, the heat exchanger has an air inlet cavity, the heat exchange channel and the air outlet cavity that are interconnected, and a plurality of the heat exchange channels and air passages are formed in the heat exchanger. The wind passage is arranged to exchange heat with the heat exchange passage.

Optionally, the sealed cavity has a second air inlet and a second air outlet, the heat exchanger is provided in the heat dissipation cavity, the second air inlet is connected to the air inlet cavity, and the second air outlet Connected to the air outlet cavity, the air inlet end of the air passage is connected to the first air inlet through the first air duct, and the air outlet end of the air passage is connected to the first air outlet.

Optionally, a first cooling fan wheel is provided on a side of the first air duct facing the first air inlet;

A second cooling fan wheel is provided at the first air inlet, and the second cooling fan wheel is arranged toward the radiator.

Optionally, the heat dissipation cavity has a first heat dissipation cavity and a second heat dissipation cavity arranged at intervals, the radiator is provided in the first heat dissipation cavity, and the heat exchanger is provided in the second heat dissipation cavity.

Optionally, a first spoiler wind wheel is provided in the sealed cavity, and the first spoiler wind wheel is provided at the edge of the second air inlet and/or the second air outlet, and the first spoiler wind wheel makes the The gas in the sealed cavity flows according to a preset flow path, and at least one of the plurality of devices to be heat dissipated is located on the flow path.

Optionally, the heat exchanger is provided in the sealed cavity, the first air inlet is connected to the air inlet cavity through a second air channel, the first air outlet is connected to the air outlet cavity, and the through The air channel communicates with the sealed cavity.

Optionally, a first cooling fan wheel is provided on the side of the second air duct facing the first air inlet;

A second cooling fan wheel is provided at the first air inlet, and the second cooling fan wheel is arranged toward the radiator.

Optionally, a first spoiler wind wheel is provided in the sealed cavity, and the first spoiler wind wheel is provided on the side of the wind passage. The first spoiler wind wheel causes the gas in the sealed cavity to Flow according to a preset flow path, and at least one of the plurality of devices to be heat dissipated is located on the flow path.

Optionally, a second spoiler rotor is also provided in the sealed cavity. The second spoiler rotor is disposed on a side away from the first spoiler rotor and is located along the edge of the first spoiler rotor. The height direction of the sealed cavity is offset.

Optionally, the heat dissipation cavity has a first heat dissipation cavity and a second heat dissipation cavity arranged at intervals, the radiator is provided in the first heat dissipation cavity, and the heat exchanger is provided in the second heat dissipation cavity.

Optionally, the heat exchanger includes a heat exchange main body, and a first air collecting hood and a second air collecting hood provided at opposite ends of the heat exchange main body, and the air inlet cavity is provided at the first collecting hood. In the air hood, the air outlet cavity is located in the second air collecting hood, the heat exchange main body includes a plurality of heat exchange tubes arranged at intervals, and the heat exchange channels are formed in the heat exchange tubes. An air passage is formed between two adjacent heat exchange tubes, and heat dissipation fins are provided between two adjacent heat exchange tubes.

Optionally, the heat dissipation cavity and the sealed cavity are separated by a partition, the radiator is installed on a side of the partition facing the heat dissipation cavity, and the heat exchanger is installed on the partition. .

Optionally, the plurality of devices to be heat dissipated include a first device to be heat dissipated, a second device to be heat dissipated, and a third device to be heat dissipated, and the first device to be heat dissipated, the second device to be heat dissipated, At least one of the heat dissipation device and the third heat dissipation device is fixed on a side of the partition facing the closed cavity and is disposed close to the radiator.

Optionally, the plurality of devices to be heat dissipated further include a fourth device to be heat dissipated, and the fourth device to be heat dissipated is provided in the sealed cavity.

Optionally, the fourth component to be heat dissipated is fixed on a side of the partition facing the closed cavity and is disposed close to the radiator.

Optionally, the plurality of components to be heat dissipated further includes a fourth component to be heat dissipated, the fourth component to be heat dissipated is provided in the heat dissipation cavity and is located between the first air inlet and the first air outlet. .

Optionally, each of the first air outlets has a plurality of first air outlets, and the plurality of first air outlets are provided on at least one side of the heat dissipation cavity, and the first air inlet is provided in the heat dissipation cavity away from the One side of the sealed cavity and/or located at the bottom of the heat dissipation cavity.

The present invention also proposes a photovoltaic system, including the power device as mentioned above.

The technical solution of the present invention is to provide a separate heat dissipation cavity and a sealed cavity in the casing. The heat dissipation cavity has a first air inlet and a first air outlet connected to the outside. The heat dissipation cavity is mainly used to exchange cold air with the outside, and the closed cavity is always in a closed state, and the air circulation inside it is internal circulation, thereby improving the protection level of the closed cavity. A plurality of components to be heat dissipated are at least partially disposed in the sealed cavity. The heat dissipation device includes a radiator and a heat exchanger. The radiator is located in the heat dissipation cavity and is located on the side of the heat dissipation cavity close to the airtight cavity. It increases the heat dissipation area of the airtight cavity and facilitates the timely dissipation of heat in the airtight cavity. In order to further improve the heat dissipation efficiency, at least one of the multiple heat dissipation devices is attached to a side of the sealed cavity close to the heat dissipation cavity, so that the heat dissipation is through contact, so that the heat sink can take out the heat from the surface of the heat dissipation device in time. A heat exchange channel is provided in the heat exchanger. The heat exchanger is located in a closed cavity. The heat exchange channel connects the first air inlet and the first air outlet, so that the temperature of the external cold air is introduced into the heat exchange channel through the first air inlet. That is, it is introduced into the closed cavity, so that the temperature of the external cold air is transferred to the closed cavity, reducing the temperature in the closed cavity, and taking the heat out of the closed cavity, thereby completing the replacement of air heat in the closed cavity, or the heat exchanger is located in The heat dissipation cavity, the heat exchange channel is connected to the closed cavity, the heat exchanger is located in the heat dissipation cavity, the heat exchange channel is connected to the closed cavity, that is, the air heat in the closed cavity is exported from the closed cavity to the heat dissipation cavity through the heat exchange channel, and passes through the first air inlet The surface of the heat exchange channel is cooled, so that the temperature of the air flowing through the heat exchange channel in the heat dissipation cavity decreases, which in turn causes the temperature in the entire closed cavity to drop, thereby completing the replacement of air heat in the closed cavity. This improves the heat dissipation efficiency of the devices to be heat dissipated in the casing, thereby extending the service life of the power device.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without exerting creative efforts.

Figure 1 is a front cross-sectional view of the first embodiment of the power device of the present invention;

Figure 2 is a side cross-sectional view of the power device in Figure 1;

Figure 3 is a top cross-sectional view of the power device in Figure 1;

Figure 4 is a back cross-sectional view of the power device in Figure 1;

Figure 5 is a schematic structural diagram of the heat exchanger in the power equipment in Figure 1;

Figure 6 is a front cross-sectional view of the second embodiment of the power device of the present invention;

Figure 7 is a side cross-sectional view of the power device in Figure 6;

Figure 8 is a top cross-sectional view of the power device in Figure 6;

Figure 9 is a side cross-sectional view of a third embodiment of the power device of the present invention;

Figure 10 is a top cross-sectional view of the power device in Figure 9;

Figure 11 is a back cross-sectional view of the power device in Figure 9;

Figure 12 is a front cross-sectional view of the fourth embodiment of the power device of the present invention;

Figure 13 is a top cross-sectional view of the power device in Figure 12;

Figure 14 is a back cross-sectional view of the power device in Figure 12;

Figure 15 is a top cross-sectional view of the fifth embodiment of the power device of the present invention;

Figure 16 is a back cross-sectional view of the power device in Figure 15;

Figure 17 is a front cross-sectional view of the sixth embodiment of the power device of the present invention;

Figure 18 is a side cross-sectional view of the power device in Figure 17;

Figure 19 is a top cross-sectional view of the power device in Figure 17;

Figure 20 is a back cross-sectional view of the power device in Figure 17;

Figure 21 is a top cross-sectional view of the seventh embodiment of the power device of the present invention;

Figure 22 is a rear cross-sectional view of the power device of Figure 21.

Explanation of reference numbers:

label name label name 100 Power equipment 131 The first spoiler wind wheel 110 chassis 132 Second spoiler wheel 1101 first cavity wall 133 Second air inlet 1102 second cavity wall 134 Second air outlet 1103 third cavity wall 135 First wind channel 1104 fourth cavity wall 140 Devices to be cooled 1105 fifth chamber wall 141 The first component to be heat dissipated 1106 Sixth cavity wall 142 The second component to be heat dissipated 1107 seventh chamber wall 143 The third component to be heat dissipated 1108 Eighth chamber wall 144 The fourth device to be heat dissipated 1109 Ninth chamber wall 150 Cooling device 1110 tenth cavity wall 160 heat sink 112 Partition 170 Heat Exchanger 120 heat dissipation cavity 171 Heat exchange channel 121 first air inlet 172 Air inlet cavity 122 First air outlet 173 Air outlet 123 Second air channel 174 wind passage 124 The first cooling wheel 175 Heat exchange body 125 First heat dissipation cavity 176 Episode 1 Wind Hood 126 Second heat dissipation cavity 177 Episode 2 Wind Hood 127 partition board 178 Heat exchange tube 128 Second cooling wheel 179 cooling fins 130 sealed chamber

The realization of the purpose, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), then the directional indications are only used to explain the position of a certain posture (as shown in the drawings). The relative positional relationship, movement conditions, etc. between the components under the display). If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving “first”, “second”, etc. in the embodiments of the present invention, the descriptions of “first”, “second”, etc. are only for descriptive purposes and shall not be understood as indications or implications. Its relative importance or implicit indication of the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the meaning of "and/or" appearing in the entire text is to include three parallel solutions, taking "A and/or B as an example", including solution A, or solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions in various embodiments can be combined with each other, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions does not exist. , nor within the protection scope required by the present invention.

The present invention provides a power device 100.

In the embodiment of the present invention, as shown in FIGS. 1 to 22 , the power device 100 includes a casing 110 and a plurality of devices 140 to be heat dissipated and a heat dissipation device 150 provided in the casing 110 . The casing 110 has separate The heat dissipation cavity 120 and the sealed cavity 130 have a first air inlet 121 and a first air outlet 122 that are connected to the outside. A plurality of devices 140 to be heat dissipated are at least partially disposed in the closed cavity 130; the heat dissipation device 150 includes a radiator 160 and a heat exchanger 170. The radiator 160 is disposed in the heat dissipation cavity 120, and the heat exchanger 170 is provided with a heat exchange channel 171. The heat exchanger 170 is disposed in the airtight cavity 130 , and the heat exchange channel 171 communicates with the first air inlet 121 and the first air outlet 122 . Alternatively, the heat exchanger 170 is disposed in the heat dissipation cavity 120 , and the heat exchange channel 171 communicates with the airtight cavity 130 .

Specifically, the casing 110 has a heat dissipation cavity 120 and a sealed cavity 130 arranged separately. The heat dissipation cavity 120 has a first air inlet 121 and a first air outlet 122 connected to the outside, so that the heat dissipation cavity 120 is mainly used for cooling with the outside. Air is exchanged, and the sealed cavity 130 is always in a sealed state, and the air circulation inside is internal circulation, thereby improving the protection level of the sealed cavity 130 . Since the multiple devices 140 to be heat dissipated are at least partially disposed in the sealed cavity 130 , the devices 140 to be heat dissipated are usually power components such as inverters and capacitors, and have high requirements on the working environment, so they are disposed in the closed cavity 130 , thereby improving the The protection level of the device 140 to be heat dissipated. Some heat dissipation devices 140 with lower protection level requirements can be placed in the heat dissipation cavity 120 , thereby improving the heat dissipation effect of such heat dissipation devices 140 and reducing the heat dissipation requirements in the sealed cavity 130 , thereby improving the heat dissipation efficiency of multiple heat dissipation devices 140 . heat radiation. In other embodiments, multiple devices 140 to be heat dissipated may also be disposed in the sealed cavity 130 . A heat dissipation device 150 is provided in the casing 110. The heat dissipation device 150 includes a radiator 160 and a heat exchanger 170. The radiator 160 is disposed in the heat dissipation cavity 120 and is located on the side of the heat dissipation cavity 120 close to the sealed cavity 130, thereby increasing the heat dissipation rate. The heat dissipation area of the wall of the sealed cavity 130 is large, thereby facilitating timely dissipation of heat in the sealed cavity 130 . In order to further improve the heat dissipation efficiency, at least one of the plurality of heat dissipation devices 140 is attached to the side of the sealed cavity 130 close to the heat dissipation cavity 120, so as to dissipate heat through contact, so that the heat sink 160 can promptly dissipate the heat on the surface of the heat dissipation device 140. Bring out. The heat exchanger 170 is provided with a heat exchange channel 171, which is mainly used to replace the air heat in the closed cavity 130. When the heat exchanger 170 is installed in the closed cavity 130, that is, the heat exchange channel 171 is installed in the closed cavity 130, at this time , the heat exchange channel 171 connects the first air inlet 121 and the first air outlet 122, so that the temperature of the external cold air is introduced into the heat exchange channel 171 through the first air inlet 121, that is, introduced into the sealed cavity 130, so that the temperature of the external cold air It is transferred to the airtight cavity 130 to reduce the temperature in the airtight cavity 130 and take the heat out of the airtight cavity 130, thereby completing the replacement of air heat in the airtight cavity 130; the heat exchanger 170 is located in the heat dissipation cavity 120, and the heat exchange channel 171 is connected to the sealed cavity 130, that is, the air heat in the sealed cavity 130 is led out of the sealed cavity 130 to the heat exchange channel 171 through the heat exchange channel 171, and is cooled on the surface of the heat exchange channel 171 through the first air inlet 121, so that the heat dissipation cavity 120 The temperature of the air flowing through the heat exchange channel 171 decreases, thereby causing the temperature in the entire sealed cavity 130 to decrease, thereby completing the replacement of air heat in the sealed cavity 130 .

The sealed cavity 130 has a first cavity wall 1101 , a second cavity wall 1102 , a third cavity wall 1103 , a fourth cavity wall 1104 and a fifth cavity wall 1105 arranged at an angle, and the first cavity wall 1101 serves as the casing 110 The front wall of the first cavity wall 1101 is surrounded by the second cavity wall 1102, the third cavity wall 1103, the fourth cavity wall 1104 and the fifth cavity wall 1105. The heat dissipation cavity 120 has a sixth cavity arranged at an angle. wall 1106, the seventh cavity wall 1107, the eighth cavity wall 1108, the ninth cavity wall 1109 and the tenth cavity wall 1110, wherein the sixth cavity wall 1106 serves as the back wall of the casing 110, the seventh cavity wall 1107, the eighth cavity wall 1107 and the tenth cavity wall 1110. The cavity wall 1108, the ninth cavity wall 1109 and the tenth cavity wall 1110 surround the periphery of the sixth cavity wall 1106. The second cavity wall 1102 and the seventh cavity wall 1107 serve as the top wall of the casing 110 , the third cavity wall 1103 and the eighth cavity wall 1108 serve as the bottom wall of the casing 110 , the fourth cavity wall 1104 and the ninth cavity wall 1109 serve as The first side wall of the casing 110 , the fifth cavity wall 1105 and the tenth cavity wall 1110 serve as the second side wall of the casing 110 . In order to speed up the air flow in the heat dissipation cavity 120, in this embodiment, there are multiple first air inlets 121 and first air outlets 122. In order to reduce the possibility of air flow turbulence in the heat dissipation cavity 120, and further speed up the air flow in the heat dissipation cavity 120, For air flow, the first air inlet 121 in the heat dissipation cavity 120 is usually opened on the side or bottom of the heat dissipation cavity 120, that is, it is opened on the sixth cavity wall 1106 or the eighth cavity wall 1108, that is, side air inlet or downward air inlet is used. The form of wind, and usually the area is larger, is usually a plurality of small first air inlets 121 spaced apart to form a large first air inlet 121. Therefore, when the heat exchange passage 171 is connected to the first air inlet 121, the heat exchanger is The air inlet cavity 172 of the channel 171 is in contact with the periphery of one of the plurality of first air inlets 121, so that the first air inlet 121 can communicate with both the heat dissipation cavity 120 and the heat exchange channel 171. There are also a plurality of corresponding first air outlets 122 , and the plurality of first air outlets 122 are opened on multiple side walls of the heat dissipation cavity 120 , thereby facilitating the timely dissipation of hot air in the heat dissipation cavity 120 .

The technical solution of the present invention is to provide a separate heat dissipation cavity 120 and a sealed cavity 130 in the casing 110. The heat dissipation cavity 120 has a first air inlet 121 and a first air outlet 122 that are connected to the outside. The heat dissipation cavity 120 is mainly used for exchanging cold air with the outside, and the sealed cavity 130 is always in a closed state, and the air circulation inside it is internal circulation, thereby improving the protection level of the sealed cavity 130 . A plurality of devices 140 to be heat dissipated are at least partially disposed in the sealed cavity 130 . The heat dissipation device 150 includes a radiator 160 and a heat exchanger 170. The radiator 160 is disposed in the heat dissipation cavity 120 and is located on the side of the heat dissipation cavity 120 close to the sealed cavity 130, which increases the heat dissipation area of the closed cavity 130, thus facilitating the sealing cavity 130. The heat inside is dissipated in time. In order to further improve the heat dissipation efficiency, at least one of the plurality of heat dissipation devices 140 is attached to the side of the sealed cavity 130 close to the heat dissipation cavity 120, so as to dissipate heat through contact, so that the heat sink 160 can promptly dissipate the heat on the surface of the heat dissipation device 140. Bring out. The heat exchanger 170 is provided with a heat exchange channel 171. The heat exchanger 170 is located in the sealed cavity 130. The heat exchange channel 171 connects the first air inlet 121 and the first air outlet 122, so that the external cold air is transferred through the first air inlet 121. The temperature is introduced into the heat exchange channel 171, that is, into the sealed cavity 130, so that the temperature of the external cold air is transferred to the sealed cavity 130, reducing the temperature in the sealed cavity 130, and taking the heat out of the sealed cavity 130, thus completing the sealed cavity The replacement of air heat in 130, or the heat exchanger 170 is located in the heat dissipation cavity 120, the heat exchange channel 171 is connected to the closed cavity 130, the heat exchanger 170 is located in the heat dissipation cavity 120, the heat exchange channel 171 is connected to the closed cavity 130, that is, the closed cavity The air heat in 130 is exported from the sealed cavity 130 to the heat dissipation cavity 120 through the heat exchange channel 171, and is cooled on the surface of the heat exchange channel 171 through the first air inlet 121, so that the temperature of the air flowing through the heat exchange channel 171 in the heat dissipation cavity 120 decreases. , thereby causing the temperature within the entire sealed cavity 130 to drop, thereby completing the replacement of heat in the air within the sealed cavity 130 . Thereby, the heat dissipation efficiency of the device 140 to be heat dissipated in the casing 110 is improved, thereby extending the service life of the power device 100 .

In one embodiment, the heat exchanger 170 has an air inlet chamber 172, a heat exchange passage 171 and an air outlet chamber 173 that are interconnected. A plurality of heat exchange passages 171 and air passages 174 are formed in the heat exchanger 170. The air channel 174 and the heat exchange channel 171 are arranged for heat exchange. Specifically, the external cold air or the hot air in the sealed cavity 130 enters the heat exchange channel 171 from the air inlet cavity 172, and the corresponding hot air or external cold air in the closed cavity 130 passes through the air passage 174, and the temperature in the heat exchange channel 171 can be quickly transferred. The airflow passing through the air passage 174 is brought out of the heat exchanger 170 to complete the temperature replacement. The airflow after the heat exchange passage 171 completes the replacement flows out of the heat exchange passage 171 from the air outlet cavity 173 . Preferably, a plurality of heat exchange passages 171 and a plurality of air passages 174 are formed in the heat exchanger 170, so that the plurality of air passages 174 and the plurality of heat exchange passages 171 are arranged alternately in sequence, thereby dividing the heat exchange passages 171 into Multiple small channels are also divided into multiple corresponding air passages 174, thereby increasing the contact area between the heat exchange channel 171 and the air passage 174 and improving the heat exchange efficiency.

5, the heat exchanger 170 includes a heat exchange main body 175, and a first air collecting hood 176 and a second air collecting hood 177 provided at opposite ends of the heat exchange main body 175. The air inlet chamber 172 is provided in the first collecting hood. In the air hood 176, the air outlet cavity 173 is located in the second air collection hood 177. The heat exchange main body 175 includes a plurality of heat exchange tubes 178 arranged at intervals. The heat exchange channels 171 are formed in the heat exchange tubes 178. The air passage 174 It is formed between two adjacent heat exchange tubes 178, and a heat dissipation fin 179 is provided between two adjacent heat exchange tubes 178. Specifically, a plurality of through holes are provided in the first air collecting hood 176 and the second air collecting hood 177, and the plurality of through holes are respectively connected to a plurality of heat exchange tubes 178, thereby forming interconnected air inlet chambers 172 and outlet chambers. Air cavity 173 and heat exchange channel 171. A plurality of heat exchange tubes 178 are arranged at intervals, and an air passage 174 is formed between the two heat exchange tubes 178 so that the gas in the heat exchange channel 171 and the gas in the air passage 174 exchange heat through the heat exchange tubes 178 . In order to further increase the contact area between the heat exchange channel 171 and the air passage 174 and improve the heat exchange efficiency, a heat dissipation fin 179 is provided between two adjacent heat exchange tubes 178, and the heat dissipation fin 179 is wavy as a whole. And the opposite sides of the heat dissipation fin 179 can contact two adjacent heat exchange tubes 178, thereby further improving the heat exchange efficiency of the heat exchanger 170.

In the first embodiment, referring to FIGS. 1 to 4 , the heat exchanger 170 is provided in the sealed cavity 130 , the first air inlet 121 is connected to the air inlet cavity 172 through the second air channel 123 , and the first air outlet 122 is connected to the air outlet cavity. 173. The air passage 174 communicates with the sealed cavity 130. Specifically, the heat exchanger 170 is disposed in the sealed cavity 130. At this time, the heat exchange channel 171 communicates with the first air inlet 121 and the first air outlet 122, and the first air inlet 121 communicates with the air inlet cavity through the second air channel 123. 172, that is, one of the plurality of first air inlets 121 is connected to the air inlet cavity 172 through the preset second air channel 123, so that the heat exchange channel 171 and the heat dissipation cavity 120 are independently set up, and the external cold air can pass through the first air inlet. 121 and the second air duct 123 directly enter the air inlet cavity 172, reducing the number of heat dissipation devices 140 that the external cold air passes through when flowing to the sealed cavity 130, thereby ensuring that all the gas entering the air inlet cavity 172 is external cold air, reducing air flow resistance and reducing The heat is lost, thereby ensuring the heat exchange efficiency of the heat exchange channel 171, so that the temperature of the external cold air can be directly transferred to the closed cavity 130 through the heat exchange channel 171, reducing the temperature in the closed cavity 130, and taking the heat out of the closed cavity 130 , thereby completing the replacement of air heat in the sealed cavity 130 and effectively reducing the heat accumulation of the device 140 to be heat dissipated in the sealed cavity 130 . The first air outlet 122 is connected to the air outlet cavity 173 , in which the heat can be directly discharged from the power device 100 through the first air outlet 122 by setting a preset air duct, or the heat-exchanged gas can be passed through the air outlet cavity 173 It is discharged into the heat dissipation cavity 120 and is discharged from the power device 100 together with the gas in the heat dissipation cavity 120 . At this time, preferably, the air outlet cavity 173 is disposed close to the first air outlet 122 .

Further, referring to Figures 1 to 16 again, the second air duct 123 faces the first heat dissipation wheel 124 on the side of the first air inlet 121; a second heat dissipation wheel 128 is provided at the first air inlet 121, and the second The heat dissipation fan wheel 128 is arranged toward the radiator 160 . Specifically, the first heat dissipation fan wheel 124 is used to speed up the gas flow in the heat exchange channel 171, thereby increasing the heat exchange efficiency of the heat exchanger 170, and the second heat dissipation wind wheel 128 is used to speed up the air flow in the heat dissipation cavity 160. That is to say, the air flow on the surface of the radiator 160 is accelerated, thereby increasing the heat dissipation efficiency of the radiator 160, and also reducing the probability of foreign matter such as catkins and dust blocking the first air inlet 121 and the first air outlet 122, and the first heat dissipation wind wheel 124 The airtight cavity 130 and the heat dissipation cavity 130 can be equipped with monitoring devices, such as temperature sensors, to monitor the temperatures in the airtight cavity 130 and the heat dissipation cavity 130. When the airtight cavity 130 and/or Or when the temperature in the heat dissipation cavity 130 is too high, the first heat dissipation fan wheel 124 and/or the second heat dissipation wind wheel 128 is controlled to start working. When the temperature in the airtight cavity 130 and/or the heat dissipation cavity 130 is too low, the first heat dissipation fan wheel 124 is controlled to start working. The wind wheel 124 and/or the second heat dissipation wind wheel 128 stops working, so that the first heat dissipation wind wheel 124 and the second heat dissipation wind wheel 128 work independently, thereby reducing energy consumption and realizing intelligent heat dissipation of the power device 100 . It also helps to reduce the noise caused by the first cooling fan wheel 124 and/or the second cooling fan wheel 128 .

In order to further speed up the heat exchange efficiency of the heat exchanger 170, a first spoiler wheel 131 is provided in the sealed cavity 130. The first spoiler wheel 131 is provided on the side of the wind passage 174. The first spoiler wheel 131 makes the sealed cavity The gas in 130 flows according to a preset flow path, and at least one of the plurality of heat dissipating devices 140 is located on the flow path. Specifically, the first spoiler wind wheel 131 is disposed on the side of the wind passage 174, which on the one hand speeds up the flow rate of the air flowing through the wind passage 174, and on the other hand speeds up the wind speed of the entire closed cavity 130, thereby further speeding up the flow rate. The heat exchange efficiency of the heat exchanger 170. And the first spoiler wind wheel 131 causes the gas in the sealed cavity 130 to flow according to the preset flow path, and at least one of the plurality of devices 140 to be heat dissipated is located on the flow path, thereby accelerating the air flow rate on the surface of the device 140 to be heat dissipated, thereby The heat generated by the device 140 to be heat dissipated is quickly taken away, further improving the heat dissipation effect of the device 140 to be heat dissipated. In the first embodiment, referring to FIGS. 1 to 4 , the first spoiler rotor 131 is disposed on the outlet side of the wind passage 174 . At this time, the first spoiler rotor 131 sucks air relative to the wind passage 174 . In other embodiments, the first spoiler rotor 131 is disposed on the inlet side of the wind passage 174 , and at this time, the first spoiler rotor 131 blows air relative to the wind passage 174 .

Furthermore, referring again to FIGS. 1 to 22 , a second spoiler wheel 132 is also provided in the sealed cavity 130 . The second spoiler wheel 132 is disposed on a side away from the first spoiler wheel 131 and is connected with the first spoiler wheel 131 . The flow wheel 131 is disposed in a staggered position along the height direction of the sealed cavity 130 . Specifically, a second spoiler rotor 132 is also provided in the sealed cavity 130, thereby further accelerating the wind speed of the entire sealed cavity 130, and the second spoiler rotor 132 is located on the side away from the first spoiler rotor 131. And the first spoiler wind wheel 131 is disposed offset along the height direction of the sealed cavity 130, so that the preset flow path is as long as possible, so as to take into account as many devices 140 to be heat dissipated as possible, thereby further improving the heat dissipation effect of the devices 140 to be heat dissipated.

In one embodiment, the heat dissipation cavity 120 and the sealed cavity 130 are separated by a partition 112 , the radiator 160 is installed on the side of the partition 112 facing the heat dissipation cavity 120 , and the heat exchanger 170 is installed on the partition 112 . Specifically, the heat dissipation cavity 120 and the sealed cavity 130 are separated by the partition 112 to facilitate the processing of the casing 110 . The radiator 160 is installed on the side of the partition 112 facing the heat dissipation cavity 120, and the heat exchanger 170 is installed on the partition 112, thereby increasing the heat dissipation area of the sealed cavity 130 and facilitating the timely dissipation of heat in the sealed cavity 130.

Further, the plurality of heat dissipating devices 140 include a first heat dissipating device 141 , a second heat dissipating device 142 , and a third heat dissipating device 143 located in the sealed cavity 130 . At least one of the third heat dissipating device 143 is fixed on the side of the partition 112 facing the closed cavity 130 and is located close to the heat sink 160 . Specifically, the first heat dissipation device 141 is mainly a power device, a power board, etc., the second heat dissipation device 142 is mainly an electrolytic capacitor, an electrolytic capacitor plate, etc., and the third heat dissipation device 143 is mainly an output board, etc. At least one of the first heat dissipation device 141 , the second heat dissipation device 142 and the third heat dissipation device 143 is fixed on the side of the partition 112 facing the closed cavity 130 and is disposed close to the radiator 160 so as to dissipate heat through contact. The heat sink 160 is caused to take out the heat from the surface of the first heat dissipation device 141 and/or the second heat dissipation device 142 and/or the third heat dissipation device 143 in time.

Referring to FIGS. 1 to 4 , in the first embodiment, the plurality of devices 140 to be heat dissipated further include a fourth device 144 to be heat dissipated. The fourth device 144 is provided in the heat dissipation cavity 120 and is located between the first air inlet 121 and the first heat dissipation device 144 . Between 122 air outlets. Specifically, the fourth component to be heat dissipated 144 is mainly another component of the power device 100 and has low protection level requirements, so it can be directly installed in the heat dissipation cavity 120 , and the fourth component to be heat dissipated 144 is located between the first air inlet 121 and the first air inlet 121 . Between the air outlets 122, the air flow on the surface of the fourth device 144 to be heat-dissipated is accelerated, and the heat of the radiator 160 is dissipated in a timely manner.

In order to speed up the air flow in the heat dissipation cavity 120, in this embodiment, there are multiple first air outlets 122, and the plurality of first air outlets 122 are provided on at least one side of the heat dissipation cavity 120. The first air inlet 121 It is located on the side of the heat dissipation cavity 120 away from the sealed cavity 130 . Specifically, the first air inlet 121 is provided on the side of the heat dissipation cavity 120 away from the sealed cavity 130, that is, it is provided on the sixth cavity wall 1106 of the heat dissipation cavity 120. That is, the first air inlet 121 adopts a side air inlet method. wind.

In the first embodiment, referring to FIGS. 1 to 5 , the first heat dissipation device 141 , the second heat dissipation device 142 , and the third heat dissipation device 143 are all disposed in the sealed cavity 130 , and the first heat dissipation device 141 is attached to It is arranged in conjunction with the partition 112 so that the first heat dissipating device 141 relies on the heat exchanger 170 and the radiator 160 for heat dissipation, and the second heat dissipating device 142 and the third heat dissipating device 143 both rely on the heat exchanger 170 for heat dissipation. The fourth device 144 to be heat dissipated is disposed in the heat dissipation cavity 120 and relies on the air flow in the heat dissipation cavity 120 to dissipate heat. Figure 1 shows a front cross-sectional view of the first embodiment of the power device 100 of the present invention. The direction indicated by the arrow in Figure 1 is the flow direction of the air flow in the sealed cavity 130. The air flow continuously circulates along the circumferential direction of the sealed cavity 130, thereby accelerating the first The air flow velocity on the surface of the device to be heat dissipated 141 , the second device to be heat dissipated 142 , and the third device to be heat dissipated 143 , and the first spoiler wind wheel 131 is disposed on the outlet side of the wind passage 174 , at this time, the first spoiler wind wheel 131 is relative to The wind passage 174 absorbs wind. FIG. 2 is a side cross-sectional view of the power device 100 in FIG. 1. The direction indicated by the arrow in FIG. In the sealed cavity 130, part of the external cold air directly enters the air inlet cavity 172 through the first air inlet 121 and the second air channel 123, and then flows into the heat exchange channel 171, so that the temperature of the external cold air is directly transferred to the closed cavity 130 through the heat exchange channel 171. , lowering the temperature in the airtight cavity 130 and taking the heat out of the airtight cavity 130, thereby completing the replacement of air heat in the airtight cavity 130, thereby providing the first heat dissipation device 141, the second heat dissipation device 142, the third heat dissipation device 141, and the third heat dissipation device 142. The heat dissipation device 143 is to be cooled down. FIG. 3 is a top cross-sectional view of the power device 100 in FIG. 1 . The fourth device 144 to be heat dissipated is disposed in the heat dissipation cavity 120 and is located between the first air inlet 121 and the second air inlet 133. In this embodiment, the fourth heat dissipation cavity 120 is disposed in the radiator 160 close to the first outlet. One side of the air outlet 122. Figure 4 is a back cross-sectional view of the power device 100 in Figure 1. The direction indicated by the arrow in Figure 4 is the flow direction of the airflow in the heat dissipation cavity 120. In this embodiment, the heat dissipation cavity 120 adopts a side air inlet method for air inlet and side air inlet. The air is discharged from the top and bottom, so that another part of the external cold air enters through the first air inlet 121 of the sixth cavity wall 1106 and is divided into two parts. A part of the airflow moves upward to take away the heat on the radiator 160, and then passes through the fourth The heat to be dissipated from the surface of the device 144 is taken away, and flows out through the first air outlet 122 of the ninth cavity wall 1109 and the tenth cavity wall 1110. Another part of the airflow moves downward to take away the heat from the lower part of the radiator 160, and then flows out through the first air outlet 122 of the ninth cavity wall 1109 and the tenth cavity wall 1110. The first air outlet 122 of the eight-cavity wall 1108 flows out.

In the second embodiment, referring to FIGS. 4 to 8 , the difference between the second embodiment and the first embodiment is that the first spoiler rotor 131 is arranged in a different position. In this embodiment, the first spoiler rotor 131 is disposed in a different position. 131 is arranged on the air inlet side of the wind passage 174. At this time, the first spoiler rotor 131 blows air relative to the wind passage 174. Its specific heat dissipation form is as follows:

The first device to be heat dissipated 141 , the second device to be heat dissipated 142 , and the third device to be heat dissipated 143 are all disposed in the closed cavity 130 , and the first device to be heat dissipated 141 is disposed in close contact with the partition 112 , so that the first device to be heat dissipated 141 Relying on the heat exchanger 170 and the radiator 160 for heat dissipation, the second device 142 and the third device 143 to be heat dissipated both rely on the heat exchanger 170 for heat dissipation. The fourth device 144 to be heat dissipated is disposed in the heat dissipation cavity 120 and relies on the air flow in the heat dissipation cavity 120 to dissipate heat. FIG. 6 shows a front cross-sectional view of the second embodiment of the power device 100 of the present invention. The direction indicated by the arrow in FIG. The air flow velocity on the surface of the device to be heat dissipated 141, the second device to be heat dissipated 142, and the third device to be heat dissipated 143, and the first spoiler wind wheel 131 is disposed on the air inlet side of the wind passage 174. At this time, the first spoiler wind wheel 131 faces Blowing air in the wind passage 174. Figure 7 is a side cross-sectional view of the power device 100 in Figure 6. The direction indicated by the arrow in Figure 7 is the flow direction of the air flow in the heat exchanger 170, and the local flow direction of the air flow in the heat dissipation cavity 120, because the heat exchanger 170 is disposed in In the sealed cavity 130, part of the external cold air directly enters the air inlet cavity 172 through the first air inlet 121 and the second air channel 123, and then flows into the heat exchange channel 171, so that the temperature of the external cold air is directly transferred to the closed cavity 130 through the heat exchange channel 171. , lowering the temperature in the airtight cavity 130 and taking the heat out of the airtight cavity 130, thereby completing the replacement of air heat in the airtight cavity 130, thereby providing the first heat dissipation device 141, the second heat dissipation device 142, the third heat dissipation device 141, and the third heat dissipation device 142. The heat dissipation device 143 is to be cooled down. FIG. 8 is a top cross-sectional view of the power device 100 of FIG. 6 . The fourth device 144 to be heat dissipated is disposed in the heat dissipation cavity 120 and is located between the first air inlet 121 and the second air inlet 133. In this embodiment, the fourth heat dissipation cavity 120 is disposed in the radiator 160 close to the first outlet. One side of the air outlet 122. Figure 4 can also show a cross-sectional view of the back of the power device 100 in the second embodiment. The direction indicated by the arrow in Figure 4 is the flow direction of the airflow in the heat dissipation cavity 120. In this embodiment, the heat dissipation cavity 120 adopts a side air inlet method. The air enters in the form of wind, side and bottom air outlets, so that another part of the external cold air enters through the first air inlet 121 of the sixth cavity wall 1106 and is divided into two parts. A part of the airflow moves upward to take away the heat from the upper part of the radiator 160. Then, the heat from the surface of the fourth device 144 to be dissipated is taken away, and flows out from the first air outlet 122 of the ninth cavity wall 1109 and the tenth cavity wall 1110. Another part of the airflow moves downward to take away the heat from the lower part of the radiator 160. , and then flows out from the first air outlet 122 of the eighth cavity wall 1108 .

In the third embodiment, referring to FIGS. 1 , 5 , 9 to 11 , compared with the first embodiment, the difference between the third embodiment and the first embodiment is that the first air inlet 121 is provided at a different position.

In this embodiment, there are multiple first air outlets 122 , and the plurality of first air outlets 122 are disposed on at least one side of the heat dissipation cavity 120 , and the first air inlet 121 is disposed at the bottom of the heat dissipation cavity 120 . Specifically, the first air inlet 121 is provided at the bottom of the heat dissipation cavity 120, that is, it is provided on the eighth cavity wall 1108 of the heat dissipation cavity 120. That is, the first air inlet 121 adopts a bottom air inlet method to inlet air. Its specific heat dissipation form is as follows:

The first device to be heat dissipated 141 , the second device to be heat dissipated 142 , and the third device to be heat dissipated 143 are all disposed in the closed cavity 130 , and the first device to be heat dissipated 141 is disposed in close contact with the partition 112 , so that the first device to be heat dissipated 141 Relying on the heat exchanger 170 and the radiator 160 for heat dissipation, the second device 142 and the third device 143 to be heat dissipated both rely on the heat exchanger 170 for heat dissipation. The fourth device 144 to be heat dissipated is disposed in the heat dissipation cavity 120 and relies on the air flow in the heat dissipation cavity 120 to dissipate heat. Figure 1 can also show a front cross-sectional view of the third embodiment of the power device 100 of the present invention. The direction indicated by the arrow in Figure 1 is the flow direction of the air flow in the sealed cavity 130. The air flow continuously circulates along the circumferential direction of the sealed cavity 130, thereby accelerating the flow of air. The air flow velocity on the surface of the first heat dissipating device 141 , the second heat dissipating device 142 , and the third heat dissipating device 143 , and the first spoiler wind wheel 131 is disposed on the outlet side of the wind passage 174 , at this time, the first spoiler wind wheel 131 The air is sucked relative to the wind passage 174 . Figure 9 is a side cross-sectional view of the third embodiment of the power device 100 of the present invention. The direction indicated by the arrow in Figure 9 is the flow direction of the air flow in the heat exchanger 170 and the local flow direction of the air flow in the heat dissipation cavity 120. Due to heat exchange The device 170 is arranged in the sealed cavity 130. A part of the external cold air directly enters the air inlet cavity 172 through the first air inlet 121 and the second air channel 123, and then flows into the heat exchange channel 171, so that the temperature of the external cold air is transferred to the heat exchange channel 171. The airtight cavity 130 lowers the temperature in the airtight cavity 130 and takes the heat out of the airtight cavity 130, thereby completing the replacement of air heat in the airtight cavity 130, thereby providing the first heat dissipation device 141 and the second heat dissipation device 142. , the third heat dissipation device 143 is cooled down. FIG. 10 is a top cross-sectional view of the power device 100 of FIG. 9 . The fourth device 144 to be heat dissipated is disposed in the heat dissipation cavity 120 and is located between the first air inlet 121 and the second air inlet 133. In this embodiment, the fourth heat dissipation cavity 120 is disposed in the radiator 160 close to the first outlet. One side of the air outlet 122. Figure 11 is a cross-sectional view of the back of the power device 100 in Figure 9. The direction indicated by the arrow in Figure 11 is the flow direction of the airflow in the heat dissipation cavity 120. In this embodiment, the heat dissipation cavity 120 uses air inlet from the bottom and side air inlet. The air is discharged in the form of an external air outlet, so that another part of the external cold air enters through the first air inlet 121 of the eighth cavity wall 1108, moves upward to take away the heat from the upper part of the radiator 160, and then takes away the heat through the fourth heat dissipation device 144. The heat on the surface flows out through the first air outlet 122 of the ninth cavity wall 1109 and the tenth cavity wall 1110 .

In the fourth embodiment, referring to FIGS. 2 , 5 , 12 to 14 , compared with the first embodiment, the difference between the fourth embodiment and the first embodiment lies in the placement position of the fourth device 144 to be heat dissipated.

In this embodiment, the plurality of devices to be heat dissipated 140 also include a fourth device to be heat dissipated 144 . The fourth device to be heat dissipated 144 is provided in the closed cavity 130 , and the fourth device to be heat dissipated 144 is fixed to a side of the partition 112 facing the closed cavity 130 . side and located close to the radiator 160 . Specifically, the first heat dissipating device 141 , the second heat dissipating device 142 , the third heat dissipating device 143 and the fourth heat dissipating device 144 are all disposed in the sealed cavity 130 , and the first heat dissipating device 141 and the fourth heat dissipating device 144 are disposed in the sealed cavity 130 . The devices 144 are all arranged close to the partition 112, so that the first device 141 and the fourth device 144 rely on the heat exchanger 170 and the radiator 160 for heat dissipation, and the second device 142 and the third device 144 rely on the heat exchanger 170 and the radiator 160 for heat dissipation. 143 all rely on heat exchanger 170 for heat dissipation. Its specific heat dissipation form is as follows:

Figure 12 shows a front cross-sectional view of the fourth embodiment of the power device 100 of the present invention. The direction indicated by the arrow in Figure 12 is the flow direction of the air flow in the sealed cavity 130. The air flow continuously circulates along the circumferential direction of the sealed cavity 130, thereby accelerating the first The air flow velocity on the surface of the device to be heat dissipated 141, the second device to be heat dissipated 142, the third device to be heat dissipated 143 and the fourth device to be heat dissipated 144, and the first spoiler wind wheel 131 is disposed on the outlet side of the wind passage 174, at this time the A spoiler wind wheel 131 sucks air relative to the wind passage 174 . FIG. 2 is a side cross-sectional view that can also represent the power device 100 in the fourth embodiment. The direction indicated by the arrow in FIG. 2 is the flow direction of the air flow in the heat exchanger 170 and the local flow direction of the air flow in the heat dissipation cavity 120. The heater 170 is disposed in the sealed cavity 130. A part of the external cold air directly enters the air inlet cavity 172 through the first air inlet 121 and the second air channel 123, and then flows into the heat exchange channel 171, so that the temperature of the external cold air is transferred through the heat exchange channel 171. to the airtight cavity 130, lowering the temperature in the airtight cavity 130, and taking the heat out of the airtight cavity 130, thereby completing the replacement of air heat in the airtight cavity 130, thereby providing the first heat dissipation device 141 and the second heat dissipation device 142. The third heat dissipation device 143 and the fourth heat dissipation device 144 cool down. FIG. 13 is a top cross-sectional view of the power device 100 of FIG. 12 . The first device to be heat dissipated 141 , the second device to be heat dissipated 142 , the third device to be heat dissipated 143 and the fourth device to be heat dissipated 144 are all disposed in the sealed cavity 130 , and in this embodiment, the first device to be heat dissipated 141 and the fourth device to be heat dissipated The components 144 to be heat dissipated are arranged in close contact with the partition 112 . Figure 14 is a back cross-sectional view of the power device 100 in Figure 12. The direction indicated by the arrow in Figure 14 is the flow direction of the airflow in the heat dissipation cavity 120. In this embodiment, the heat dissipation cavity 120 adopts a side air inlet method for air inlet, and a side air inlet. The air enters in the form of air outlet from the top and bottom, so that another part of the external cold air enters through the first air inlet 121 of the sixth cavity wall 1106 and is divided into two parts. A part of the airflow moves upward to take away the heat from the upper part of the radiator 160, and is passed by the ninth The cavity wall 1109 and the first air outlet 122 of the tenth cavity wall 1110 flow out, and the other part of the airflow moves downward to take away the heat from the lower part of the radiator 160, and then flows out from the first air outlet 122 of the eighth cavity wall 1108.

In the fifth embodiment, referring to FIGS. 2 , 5 , 12 , 15 and 16 , compared with the fourth embodiment, the difference between the fifth embodiment and the fourth embodiment lies in the different placement position or heat dissipation of the fourth device 144 to be heat dissipated. The covering area of the device 160 is different.

In this embodiment, the plurality of heat dissipating devices 140 further include a fourth heat dissipating device 144 , which is disposed in the closed cavity 130 , and is spaced apart from the partition 112 , or the radiator 160 The bonding area does not cover the fourth device 144 to be heat dissipated. Specifically, the fourth device to be heat dissipated 144 is spaced apart from the partition 112 , or the covering area of the heat sink 160 does not cover the fourth device to be heat dissipated 144 . That is, the heat sink 160 cannot act on the fourth device 144 to be heat dissipated. For convenience of description, the following description only assumes that the fourth device 144 to be heat-dissipated is spaced apart from the partition 112 . The first device to be heat dissipated 141, the second device to be heat dissipated 142, the third device to be heat dissipated 143 and the fourth device to be heat dissipated 144 are all provided in the sealed cavity 130, and the first device to be heat dissipated 141 is attached to the partition 112. The first device to be heat dissipated 141 relies on the heat exchanger 170 and the radiator 160 for heat dissipation, and the second device to be heat dissipated 142 , the third device to be heat dissipated 143 and the fourth device to be heat dissipated 144 all rely on the heat exchanger 170 for heat dissipation. Its specific heat dissipation form is as follows:

Figure 12 can also show a front cross-sectional view of the fifth embodiment of the power device 100 of the present invention. The direction indicated by the arrow in Figure 12 is the flow direction of the air flow in the sealed cavity 130. The air flow continuously circulates along the circumferential direction of the sealed cavity 130, thereby accelerating the flow of air. The air flow velocity on the surface of the first heat dissipation device 141 , the second heat dissipation device 142 , the third heat dissipation device 143 and the fourth heat dissipation device 144 , and the first spoiler wind wheel 131 is disposed on the outlet side of the wind passage 174 , so At this time, the first spoiler rotor 131 sucks air relative to the wind passage 174 . FIG. 2 is a side cross-sectional view that can also represent the power device 100 in the fifth embodiment. The direction indicated by the arrow in FIG. 2 is the flow direction of the air flow in the heat exchanger 170 and the local flow direction of the air flow in the heat dissipation cavity 120. The heater 170 is disposed in the sealed cavity 130. A part of the external cold air directly enters the air inlet cavity 172 through the first air inlet 121 and the second air channel 123, and then flows into the heat exchange channel 171, so that the temperature of the external cold air is transferred through the heat exchange channel 171. to the airtight cavity 130, lowering the temperature in the airtight cavity 130, and taking the heat out of the airtight cavity 130, thereby completing the replacement of air heat in the airtight cavity 130, thereby providing the first heat dissipation device 141 and the second heat dissipation device 142. The third heat dissipation device 143 and the fourth heat dissipation device 144 cool down. FIG. 15 is a top cross-sectional view of the fifth embodiment of the power device 100 of the present invention. The first heat dissipating device 141 , the second heat dissipating device 142 , the third heat dissipating device 143 and the fourth heat dissipating device 144 are all provided in the sealed cavity 130 , and in this embodiment, the first heat dissipating device 141 is attached to The partition 112 is set. Figure 16 is a cross-sectional view of the back of the power device 100 in Figure 15. The direction indicated by the arrow in Figure 15 is the flow direction of the airflow in the heat dissipation cavity 120. In this embodiment, the heat dissipation cavity 120 adopts a side air inlet method. The air inlet is in the form of air inlet and side and bottom air outlet, so that part of the external cold air enters through the first air inlet 121 of the sixth cavity wall 1106 and is divided into two parts. A part of the airflow moves upward to take away the heat from the upper part of the radiator 160. And flows out from the first air outlet 122 of the ninth cavity wall 1109 and the tenth cavity wall 1110. Another part of the airflow moves downward to take away the heat from the lower part of the radiator 160, and then flows out from the first air outlet 122 of the eighth cavity wall 1108. .

In the sixth embodiment, referring to FIGS. 17 to 20 , the difference between the sixth embodiment and the first embodiment is that the placement position of the heat exchanger 170 is different.

In this embodiment, the sealed cavity 130 has a second air inlet 133 and a second air outlet 134. The heat exchanger 170 is located in the heat dissipation cavity 120. The second air inlet 133 is connected to the air inlet cavity 172, and the second air outlet 134 is connected to the air outlet. In the cavity 173 , the air inlet end of the air passage 174 is connected to the first air inlet 121 through the first air duct 135 , and the air passage end of the air passage 174 is connected to the first air outlet 122 . Specifically, the heat exchanger 170 is provided in the heat dissipation cavity 120. The sealed cavity 130 has a second air inlet 133 and a second air outlet 134. The second air inlet 133 is connected to the air inlet cavity 172, and the second air outlet 134 is connected to the air outlet cavity 173. , so that the heat exchange channel 171 of the heat exchanger 170 is connected to the sealed cavity 130, so that the air heat in the closed cavity 130 is exported from the closed cavity 130 to the heat dissipation cavity 120 through the heat exchange channel 171. The air inlet end of the air passage 174 is connected to the first air inlet 121 through the first air duct 135, so that the air passage 174 and the heat dissipation cavity 120 are independently set up, and the external cold air can directly pass through the first air inlet 121 and the first air duct 135. Entering the air passage 174, the flow path of the device 140 to be radiated by the external cold air when flowing to the air passage 174 is reduced, ensuring that all the gases in the air passage 174 that exchange heat with the heat exchange passage 171 are external cold air, reducing air flow resistance. , reducing heat loss, thereby improving the heat exchange efficiency of the heat exchanger 170 . The external cold air is connected to the air passage 174 through the first air inlet 121 and the first air duct 135, and then is cooled on the surface of the heat exchange channel 171, so that the temperature of the air flowing through the heat exchange channel 171 in the heat dissipation cavity 120 is reduced, thereby making the entire airtight The temperature in the cavity 130 decreases, thereby completing the replacement of air heat in the airtight cavity 130 and effectively reducing the heat accumulation of the device 140 to be heat dissipated in the airtight cavity 130 .

Further, referring to Figures 17 to 20 again, the first air duct 135 faces the first heat dissipation wheel 124 on the side of the first air inlet 121; a second heat dissipation wheel 128 is provided at the first air inlet 121, and the second The heat dissipation fan wheel 128 is arranged toward the radiator 160 . Specifically, the first cooling wheel 124 is used to speed up the gas flow in the air passage 174, thereby increasing the heat exchange efficiency of the heat exchanger 170, and the second cooling wheel 128 is used to speed up the air flow in the heat dissipation cavity 160. That is to say, the air flow on the surface of the radiator 160 is accelerated, thereby increasing the heat dissipation efficiency of the radiator 160, and also reducing the probability of foreign matter such as catkins and dust blocking the first air inlet 121 and the first air outlet 122, and the first heat dissipation wind wheel 124 The airtight cavity 130 and the heat dissipation cavity 130 can be equipped with monitoring devices, such as temperature sensors, to monitor the temperatures in the airtight cavity 130 and the heat dissipation cavity 130. When the airtight cavity 130 and/or Or when the temperature in the heat dissipation cavity 130 is too high, the first heat dissipation fan wheel 124 and/or the second heat dissipation wind wheel 128 is controlled to start working. When the temperature in the airtight cavity 130 and/or the heat dissipation cavity 130 is too low, the first heat dissipation fan wheel 124 is controlled to start working. The wind wheel 124 and/or the second heat dissipation wind wheel 128 stops working, so that the first heat dissipation wind wheel 124 and the second heat dissipation wind wheel 128 work independently, thereby reducing energy consumption and realizing intelligent heat dissipation of the power device 100 . It also helps to reduce the noise caused by the first cooling fan wheel 124 and/or the second cooling fan wheel 128 .

Further, a first spoiler rotor 131 is provided in the sealed cavity 130 . The first spoiler rotor 131 is provided at the edge of the second air inlet 133 and/or the second air outlet 134 . The first spoiler rotor 131 makes the inside of the sealed cavity 130 The gas flows according to a preset flow path, and at least one of the plurality of devices 140 to be heat dissipated is located on the flow path. Specifically, the first spoiler wind wheel 131 is provided at the edge of the second air inlet 133 and/or the second air outlet 134 to speed up the flow rate of the airflow flowing through the heat exchange channel 171 and also speed up the airflow rate of the entire closed cavity 130 , thereby further accelerating the heat exchange efficiency of the heat exchanger 170 . And the first turbulence wind wheel 131 causes the gas in the sealed cavity 130 to flow according to a preset flow path, and at least one of the plurality of heat dissipation devices 140 is located on the flow path. This accelerates the air flow rate on the surface of the device to be heat dissipated 140, thereby quickly taking away the heat generated by the device to be heat dissipated 140, and further improving the heat dissipation effect of the device to be heat dissipated 140.

Furthermore, referring to Figures 17 to 20 again, a second spoiler wheel 132 is also provided in the sealed cavity 130. The second spoiler wheel 132 is located on a side away from the first spoiler wheel 131 and is connected to the first spoiler wheel. The flow wheel 131 is disposed in a staggered position along the height direction of the sealed cavity 130 . Specifically, a second spoiler rotor 132 is also provided in the sealed cavity 130, thereby further accelerating the wind speed of the entire sealed cavity 130, and the second spoiler rotor 132 is located on the side away from the first spoiler rotor 131. And the first spoiler wind wheel 131 is offset along the height direction of the airtight cavity 130, so that the preset flow path is as long as possible, so as to take into account as many devices to be heat dissipated as possible, thereby further improving the heat dissipation effect of the device to be heat dissipated 140.

The specific heat dissipation form is as follows: the first heat dissipation device 141, the second heat dissipation device 142, and the third heat dissipation device 143 are all provided in the sealed cavity 130, and the first heat dissipation device 141 is arranged close to the partition 112. The first device to be heat dissipated 141 relies on the heat exchanger 170 and the radiator 160 for heat dissipation, and the second device to be heat dissipated 142 and the third device to be heat dissipated 143 both rely on the heat exchanger 170 for heat dissipation. The fourth device 144 to be heat dissipated is disposed in the heat dissipation cavity 120 and relies on the air flow in the heat dissipation cavity 120 to dissipate heat. Figure 17 shows a front cross-sectional view of the sixth embodiment of the power device 100 of the present invention. The direction indicated by the arrow in Figure 17 is the flow direction of the air flow in the sealed cavity 130. The air flow continuously circulates along the circumferential direction of the sealed cavity 130, thereby accelerating the first The airflow velocity on the surface of the device to be heat dissipated 141 , the second device to be heat dissipated 142 , and the third device to be heat dissipated 143 , and the first spoiler wind wheel 131 is disposed at the edge of the second air inlet 133 and/or the second air outlet 134 , when the first When the spoiler wheel 131 is disposed at the second air inlet 133, the first spoiler wheel 131 blows air relative to the heat dissipation channel; when the first spoiler wheel 131 is disposed at the second air outlet 134, the first spoiler wheel 131 blows air relative to the heat dissipation channel. Channel suction. Figure 18 is a side cross-sectional view of the power device 100 in Figure 17. The direction indicated by the arrow in Figure 18 is the flow direction of the air flow in the heat exchanger 170, and the local flow direction of the air flow in the heat dissipation cavity 120, because the heat exchanger 170 is disposed in In the heat dissipation cavity 120, part of the external cold air directly enters the air passage 174 through the first air inlet 121 and the first air duct 135. At the same time, the air flow in the sealed cavity 130 flows through the heat exchange channel, so that the external cold air passes through the air passage 174 and the air passage 174. The heat exchange channel 171 exchanges heat and takes out the heat in the sealed cavity 130, and then transfers the low temperature to the sealed cavity 130, reducing the temperature in the sealed cavity 130, thereby completing the replacement of air heat in the sealed cavity 130, and thus providing the third The first heat dissipating device 141, the second heat dissipating device 142, and the third heat dissipating device 143 cool down. FIG. 19 is a top cross-sectional view of the power device 100 of FIG. 17 . The fourth device 144 to be heat dissipated is disposed in the heat dissipation cavity 120 and is located between the first air inlet 121 and the second air inlet 133. In this embodiment, the fourth heat dissipation cavity 120 is disposed in the radiator 160 close to the first outlet. One side of the air outlet 122. Figure 20 is a back cross-sectional view of the power device 100 in Figure 17. The direction indicated by the arrow in Figure 17 is the flow direction of the airflow in the heat dissipation cavity 120. In this embodiment, the heat dissipation cavity 120 adopts a side air inlet method for air inlet, and a side air inlet. The air enters in the form of air outlet from the top and bottom, so that another part of the external cold air enters through the first air inlet 121 of the sixth cavity wall 1106 and is divided into two parts. A part of the airflow moves upward to take away the heat from the upper part of the radiator 160, and then passes through the fourth The heat to be dissipated from the surface of the device 144 is taken away, and flows out through the first air outlet 122 of the ninth cavity wall 1109 and the tenth cavity wall 1110. Another part of the airflow moves downward to take away the heat from the lower part of the radiator 160, and then flows out through the first air outlet 122 of the ninth cavity wall 1109 and the tenth cavity wall 1110. The first air outlet 122 of the eight-cavity wall 1108 flows out.

In the seventh embodiment, referring to FIGS. 17 , 18 , 21 and 22 , compared with the sixth embodiment, the difference between the seventh embodiment and the sixth embodiment lies in the different form and position of the heat dissipation cavity 120 .

In this embodiment, the heat dissipation cavity 120 has a first heat dissipation cavity 125 and a second heat dissipation cavity 126 arranged at intervals. The radiator 160 is located in the first heat dissipation cavity 125 and the heat exchanger 170 is located in the second heat dissipation cavity 126 . Specifically, the heat dissipation cavity 120 has a first heat dissipation cavity 125 and a second heat dissipation cavity 126 that are spaced apart. That is, a partition plate 127 is additionally provided in the heat dissipation cavity 120 to divide the heat dissipation cavity 120 into a first heat dissipation cavity 125 and a second heat dissipation cavity 125 . Heat dissipation cavity 126. Furthermore, the radiator 160 is disposed in the first heat dissipation cavity 125 and the heat exchanger 170 is disposed in the second heat dissipation cavity 126, thereby facilitating separate maintenance of the radiator 160 and the heat exchanger 170. The specific heat dissipation form is the same as that in the sixth embodiment, and will not be described again here.

The present invention also proposes a photovoltaic system. The photovoltaic system includes a power device 100. The specific structure of the power device 100 refers to the above-mentioned embodiments. Since this photovoltaic system adopts all the technical solutions of all the above-mentioned embodiments, it at least has the characteristics of the above-mentioned embodiments. All the beneficial effects brought by the technical solutions will not be repeated here.

The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Under the inventive concept of the present invention, equivalent structural transformations can be made using the contents of the description and drawings of the present invention, or direct/indirect applications. Other related technical fields are included in the patent protection scope of the present invention.

Claims (18)

1. A power device, characterized in that it includes: The casing has a heat dissipation cavity and a sealed cavity arranged separately, and the heat dissipation cavity has a first air inlet and a first air outlet connected to the outside; A plurality of components to be heat dissipated are at least partially disposed in the sealed cavity; and The heat dissipation device includes a radiator and a heat exchanger. The radiator is located in the heat dissipation cavity. A heat exchange channel is provided in the heat exchanger. The heat exchanger is located in the sealed cavity. A thermal channel communicates with the first air inlet and the first air outlet, or the heat exchanger is provided in the heat dissipation cavity, and the heat exchange channel communicates with the sealed cavity. 2. The power equipment according to claim 1, characterized in that the heat exchanger has an air inlet cavity, the heat exchange channel and an air outlet cavity that are interconnected, and a plurality of air inlets are formed in the heat exchanger. The heat exchange channel and the air passage are arranged to exchange heat with the heat exchange channel. 3. The power device of claim 2, wherein the sealed cavity has a second air inlet and a second air outlet, the heat exchanger is disposed in the heat dissipation cavity, and the second air inlet is connected to The air inlet cavity, the second air outlet are connected to the air outlet cavity, the air inlet end of the air passage is connected to the first air inlet through the first air duct, and the air outlet end of the air passage is Connected to the first air outlet. 4. The power device according to claim 3, wherein a first heat dissipation wind wheel is provided on the side of the first air duct facing the first air inlet; A second cooling fan wheel is provided at the first air inlet, and the second cooling fan wheel is arranged toward the radiator. 5. The power device according to claim 3, wherein the heat dissipation cavity has a first heat dissipation cavity and a second heat dissipation cavity arranged at intervals, and the radiator is provided in the first heat dissipation cavity, and the The heat exchanger is located in the second heat dissipation cavity. 6. The power equipment according to claim 3, wherein a first spoiler wind wheel is provided in the sealed cavity, and the first spoiler wind wheel is disposed at the second air inlet and/or the second outlet. At the edge of the air outlet, the first spoiler wind wheel causes the gas in the sealed cavity to flow according to a preset flow path, and at least one of the plurality of devices to be heat dissipated is located on the flow path. 7. The power device of claim 2, wherein the heat exchanger is provided in the closed cavity, the first air inlet is connected to the air inlet cavity through a second air duct, and the first air inlet is connected to the air inlet cavity through a second air duct. The air outlet is connected to the air outlet cavity, and the air passage is connected to the sealed cavity. 8. The power device according to claim 7, wherein a first heat dissipation wheel is provided on the side of the second air duct facing the first air inlet; A second cooling fan wheel is provided at the first air inlet, and the second cooling fan wheel is arranged toward the radiator. 9. The power equipment of claim 7, wherein a first spoiler wind wheel is provided in the sealed cavity, and the first spoiler wind wheel is disposed on a side of the wind passage, and the first spoiler wind wheel is disposed in the airtight cavity. A turbulent wind wheel causes the gas in the sealed cavity to flow according to a preset flow path, and at least one of the plurality of devices to be heat dissipated is located on the flow path. 10. The power equipment according to claim 6 or 9, characterized in that a second spoiler wind wheel is further provided in the sealed cavity, and the second spoiler wind wheel is disposed away from the first spoiler wind wheel. One side, and is offset from the first spoiler wind wheel along the height direction of the sealed cavity. 11. The power device of claim 2, wherein the heat exchanger includes a heat exchange main body and a first air collecting hood and a second air collecting hood provided at opposite ends of the heat exchange main body, The air inlet cavity is located in the first air collecting hood, and the air outlet cavity is located in the second air collecting hood. The heat exchange main body includes a plurality of heat exchange tubes arranged at intervals. A thermal channel is formed in the heat exchange tube, the air passage is formed between two adjacent heat exchange tubes, and a heat dissipation fin is provided between two adjacent heat exchange tubes. 12. The power device of claim 1, wherein the heat dissipation cavity and the sealed cavity are separated by a partition, and the radiator is installed on a side of the partition facing the heat dissipation cavity, The heat exchanger is installed on the partition plate. 13. The power device according to claim 12, wherein the plurality of devices to be heat dissipated include a first device to be heat dissipated, a second device to be heat dissipated, and a third device to be heat dissipated in the closed cavity, so At least one of the first device to be heat dissipated, the second device to be heat dissipated, and the third device to be heat dissipated is fixed on a side of the partition facing the closed cavity and is disposed close to the radiator. 14. The power device according to claim 13, wherein the plurality of devices to be heat dissipated further includes a fourth device to be heat dissipated, and the fourth device to be heat dissipated is provided in the sealed cavity. 15. The power device of claim 14, wherein the fourth component to be heat dissipated is fixed on a side of the partition facing the closed cavity and is disposed close to the heat sink. 16. The power device of claim 13, wherein the plurality of devices to be heat dissipated further includes a fourth device to be heat dissipated, and the fourth device to be heat dissipated is provided in the heat dissipation cavity and located in the first heat dissipation cavity. between an air inlet and the first air outlet. 17. The power device of claim 1, wherein there are multiple first air outlets, and the plurality of first air outlets are provided on at least one side of the heat dissipation cavity, and the first air outlets are The air inlet is provided on a side of the heat dissipation cavity away from the sealed cavity and/or at the bottom of the heat dissipation cavity. 18. A photovoltaic system, characterized by comprising the power device according to any one of claims 1 to 17.